The calculation for the combined pressure bearing of high pressure underground conduit

地下高压 管道的联合承压计算

Optimization analysis of large-scale underground reinforced concrete branching conduit

大型 地下钢筋混凝土岔 管结构优化分析

The underground penstock for the Husonghe Hydroelectric Power Station was designed using the calculation method of raising the allowable stress as an open conduit ;

户宋河电站 地下埋管主管的设计，采用按明 管设计提高允许应力的计算方法；

Based on the analysis of the fire cases occurred in the underground natural gas conduit and valve-well the paper expounds some fire protection problems which need attention such as design construction and management . Some suggestions are also given in the paper .

本文通过对 城市 地下天然气 管道、阀门井火灾案例的分析，阐述了在设计、施工、日常管理等方面应注意的消防问题，并提出几点建议。

Influence Factors and Mathematical Modeling of the Security of Underground Gas Conduit Network

地下燃气 管网安全影响因子研究与数学建模

Controlling the Crevices in the External Concrete Wall of the Underground Comprehensive Conduit Ditch with Extra Length and Depth

超长超深 地下综合 管沟外壁混凝土裂缝的控制

Discussion on the Reason of Leakage and Its Countermeasures in the Underground Natural Gas Conduit and Valve-well

关于 城市 地下天然气 管道、阀门井泄漏原因及对策